CNN fires editor over plagiarism

5/16/14 9:57 AM EDT

CNN has fired news editor Marie-Louise Gumuchian after finding that she was guilty of roughly 50 cases of plagiarism.

"An unpublished story flagged last week during our editing process led to an internal investigation that uncovered other examples in about 50 published stories, and our investigation is ongoing," CNN said in an editors' note published on its website.